A derelict mill devastated by a large blaze has been left "damaged beyond repair", a council said.
More than 80 firefighters tackled the fire from about 17:45 BST on Thursday on Burnley Road in Mytholmroyd, West Yorkshire.
The Victorian building, previously home to Walkley Clogs, closed in 2002 after a spell as a tourist attraction.
Calderdale Council said the road would remain closed on Friday.
Demolition work has started at the mill, with four fire engines still at the scene.
A council spokesperson said: "Sadly the former Walkley Clogs building has been damaged beyond repair and the area remains dangerous.
"Our building control surveyors are on site and working to keep the building safe, it's not clear at this stage how much of the building will need to be demolished."